I’m not entirely sure, but the G-450 and the “AZ” portion of the G-5500 are
probably the same rotator.
Ken N2ZN
> On Aug 7, 2021, at 3:52 PM, Grant Hopper <kb7wsd@gmail.com> wrote:
>
> After looking at the older manuals, I think that's likely the case. The
> 800/1000/2800 seem to have been DC for a long time. The 450 changed in
> 2019 and the 5500 changed (based on the new manual and info at the DX
> Engineering site) in 2019 too. That means all five of Yaesu's rotators are
> all DC now.
>
>> On Fri, Aug 6, 2021 at 7:20 PM <john@kk9a.com> wrote:
>>
>> Perhaps only the G-450A (now G-450ADC) recently changed to DC?
>>
>> John KK9A
>>
>>
>> Jack Brindle W6FB wrote:
>>
>> It happened long before 2019. My G-1000DXA from the 2000's is a DC device.
>> Schematics for the controllers and rotors are on-line and available.
>>
>> 73,
>> Jack, W6FB
>>
>>
>>>> On Aug 6, 2021, at 1:47 PM, Grant Hopper <kb7wsd at gmail.com> wrote:
>>>
>>> There is one "gotcha" to all this. In 2019, Yaesu changed to using DC on
>>> the rotors. From DX-Engineering " Instead of the usual AC motor drive
>>> used in older rotator designs, the G-2800DXA, G-1000DXA and G-800DXA use
>> a
>>> variable-voltage DC motor, removing the need for a large starting
>> capacitor
>>> with its potential for failure exposed to outside temperature variations.
>>> " The 450 and the 5500 are the same way.
>>>
>>> There might be an easy way to determine the AC vs DC upon inspection. I
>>> haven't looked at all the manuals to confirm this but at least with the
>>> 450, it uses only four wires for DC types. Otherwise, some of the models
>>> are stamped with a "DC" after the model number eg. " For clarity, the new
>>> DC rotator motors are marked "G-450DC" at the connector. The rear panel
>> of
>>> the controller is titled "G-450ADC" on the serial number label."
>>>
>>> 73,
>>> Grant
>>> KB7WSD
>>
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